5.15-stable review patch. If anyone has any objections, please let me know.
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From: Tomasz Michalec tmichalec@google.com
[ Upstream commit 8866f4e557eba43e991f99711515217a95f62d2e ]
If cros_typec_probe is called before EC device is registered, cros_typec_probe will fail. It may happen when cros-ec-typec.ko is loaded before EC bus layer module (e.g. cros_ec_lpcs.ko, cros_ec_spi.ko).
Return -EPROBE_DEFER when cros_typec_probe doesn't get EC device, so the probe function can be called again after EC device is registered.
Signed-off-by: Tomasz Michalec tmichalec@google.com Reviewed-by: Abhishek Pandit-Subedi abhishekpandit@chromium.org Link: https://lore.kernel.org/r/20250610153748.1858519-1-tmichalec@google.com Signed-off-by: Tzung-Bi Shih tzungbi@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/chrome/cros_ec_typec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index c065963b9a42..6f3fdd38c393 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -1110,8 +1110,8 @@ static int cros_typec_probe(struct platform_device *pdev)
typec->ec = dev_get_drvdata(pdev->dev.parent); if (!typec->ec) { - dev_err(dev, "couldn't find parent EC device\n"); - return -ENODEV; + dev_warn(dev, "couldn't find parent EC device\n"); + return -EPROBE_DEFER; }
platform_set_drvdata(pdev, typec);